If the measurements are missing but it's a UEFI system, it's a good indication
that the user has secure boot turned off.
Notify the user on the UEFI device through a non-fatal `UpdateMessage`
To accomplish this, move fu-uefi-vars into the plugin library for other plugins to use
If we say that the version format should be the same for the `version_lowest`
and the `version_bootloader` then it does not always make sense to set it at
the same time.
Moving the `version_format` to a standalone first-class property also means it
can be typically be set in the custom device `_init()` function, which means we
don't need to worry about *changing* ther version format as set by the USB and
UDev superclass helpers.
Dell does not include the first byte in the ESRT value, ignoring it. Using a
`quad` means we get versions like `0.1.4.0` rather than `1.4.0` which confuses
both users comparing versions to the vendor website, and also anyone trying to
do analysis on the firmware.
Add various fixes to enable us to build a selection of useful USB plugins.
Also, skip tests that don't make sense on WIN32 or that will not work.
With much help from Mario Limonciello <mario.limonciello@dell.com> -- Thanks!
We don't actually need either of the things it provides (looking up in source
and built, and converting to an absolute path) so just replace it with
g_build_filename() instead.
This also has the advantage that it does the right thing on Windows.
